Chip and method for reusing pins of chip

Abstract

The invention discloses a chip and a method for reusing pins of the chip. The chip comprises a plurality of internal function interfaces, a plurality of chip general pins and a pin re-definition module, wherein the plurality of internal function interfaces are connected with the plurality of chip general pins through the pin re-definition module; and the pin re-definition module is realized by a programmable circuit and is used for mapping the plurality of internal function interfaces to the plurality of chip general pins according to a preset pin re-definition configuration file. The chip disclosed by the invention can be adapted to multiple pin reusing demands.

Description

technical field [0001] The invention relates to the field of chips, in particular to a chip and a pin multiplexing method thereof. Background technique [0002] With the rapid development of integrated circuit technology, the integration level of the chip is getting higher and higher, and the functions of the chip are becoming more and more complex, followed by more and more pins of the chip. If independent pins are allocated for all functional interfaces supported by the chip during chip design, the area of ​​the chip will be relatively large. In addition, the huge number of chip pins is not conducive to the product application development of the chip. Chips of the present technology usually use multiple functional interfaces to share a set of pins, that is, a single chip pin can be multiplexed into multiple functional interfaces to reduce the number of chip pins. [0003] The chip pin multiplexing method in the prior art is to plan out the functional interface to be multi...

AI Technical Summary

Problems solved by technology

[0005] 1. The multiplexing relationship of the chip pins is determined according to the expected chip application scenarios during the chip design stage. The chip can only be applied to typical expected products, and it is difficult to meet the special needs of some complex and unexpected product applications. The product application scope of the chip is limited, which is not conducive to the product application innovation of the chip;

[0006] 2. In the chip pin multiplexing method of the prior art, if the multiplexing relationship of the chip pins is not well planned in the chip design stage, then the actual chip may have functional application defects;

[0007] 3. The multiplexing relationship of the chip pins is definite, the pin functions of the chip and the PCB board of the product can be easily analyzed, and the product application system of the chip has the risk of being cloned

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